0 like 0 dislike
2.5k views

Please remember our 05-04 Lab Exercise 3: Write class shape with width and height

How to use Abstract class to solve the problem?

Write class shape with width and height following a constructor that gives value to them.

Then define two sub-classes triangle and rectangle.

Those sub-classes can calculate the area of the shape area().

Remember, Rectangle area = (width * height)

Triangle area = (width * height)/2

#include <iostream>
using namespace std;
// Base class
class Shape 
{
public:
   // Your code: pure virtual function providing interface framework.
   // constructor and setWidth(int w) and setHeight(int h) functions here
protected:
   int width;
   int height;
};
// Derived classes
class Rectangle: public Shape
{
public:
   // Your code:    int getArea()
};
class Triangle: public Shape
{
public:
   // Your code:    int getArea()
};
int main(void)
{
   Rectangle Rect;
   Triangle  Tri;
   int w,h;
   cin >>w>>h;
   Rect.setWidth(w);
   Rect.setHeight(h);
   cin >>w>>h;
   Tri.setWidth(w);
   Tri.setHeight(h);
   cout << Rect.getArea() << ";" << Tri.getArea() << endl; 
   return 0;
}

 

[Exercise] Coding (C) - asked in C++
ID: 24855 - Available when: Unlimited - Due to: Unlimited
| 2.5k views

17 Answers

0 like 0 dislike
Hidden content!
#include *** * *** *

using ** ** std;

// Base class

class Shape

{

public:
* ** * *** * * * Your code: pure virtual function **** * ** ** *
* *** ** * * *** and * w) and * **** h) *** here
** * **** **** * w){width = w;}
** ******* * * * * * * ** * ** = h;}
*** * **
*** *** * * * *** * width;
* * ** * *** * ** ** height;

};

// Derived classes

class * *** public Shape

{

public:
*** * * * * ** ** * * Your code: *** * * *** * * * **
* * * *** * * **** ** *** * area;
* **** * * ** * ** ** = ** * *
* * * ** ** * * area;
* *** * *** *

};

class ** public Shape

{

public:
** * ****** * *** Your code: * ** ** ** * **** *** * *
* ***** * **** * * ** *
* * **** ** * ****** area;
* *** * ***** *** * * ** * = (width * *
* **** * ** ** ** *** area;
* **** *** **** **

};

int *

{
** * * ****** * *** Rect;
** ** * * ** *** * * * ****
* *** ** ***** ** w,h;
* *** ** * **** ******** * *
** ** ** ** *** * ****
* *** * * **** ** *
* * * * * ** ** * *** *** * * ** ** **** *
** ***** * ** **** ***** *
** ** * *** ** * * *** *
* * ** * ** * * ** ** ***** * * ** * **** *** * * ** *** ** ** *** ** endl;
* * *** * * *** * **** ** 0;

}
answered by (-298 points)
0 like 0 dislike
Hidden content!
#include * * **** * *

using * ** ** std;

// Base class

class Shape

{

public:
* * * * *** ** Your code: pure virtual function **** * ** *
** ** * ***** ** * * and * w) and * ** h) * ** here
* * * * * * * w){width = w;}
**** *** * **** * * * **** * = h;}
* *
** **** * * width;
* ** * *** **** * height;

};

// Derived classes

class *** public Shape

{

public:
** ******* * *** ** * Your code: * * ** ** * * * * ** ****
** ** *** * ** ** ** ** area;
** ** ***** * * ***** = ** ***
** * ** * * ** * * area;
*** ** **** ** *

};

class * * * public Shape

{

public:
**** * * * *** *** Your code: * * *** * ** * * *
** ** ** ** ** * *
**** * **** * ** ** ** * ** area;
** ******** * **** = (width * ** *
** **** *** ******* *** * * * area;
** * ** *** * **

};

int ***

{
** * * **** * * * * Rect;
* ** ** *** *** ** ** **
***** * *** * **** *** w,h;
* * * * * ** ** ***** *
** *** * * * ** * **** *
* ** * ** *** **** ***
* ** * ** * **** * ** * *** * *** * *
* *** ** * *** ** **
* * * * ** * * * *** **
* * **** ** * * * ** * **** ** ** * *** * * * ** * ** * * * * * ***** *** * endl;
* *** * * * * * 0;

}
answered by (-215 points)
0 like 0 dislike
Hidden content!
#include * * ** *

using * * std;

// Base class

class Shape

{

public:
* * * *** ** Your code: pure virtual function * * * * **** *****
*** * ***** * * ** * ** *** and *** * * w) and *** * * h) **** here
* ** *** * * * ** * * w){width = w;}
********* ** * *** *** * **** * * = h;}
* *
** ** *** * * * ** * width;
* * ***** ** * * * height;

};

// Derived classes

class ** * public Shape

{

public:
** * **** * *** Your code: * * * ** *** * * *
*** * * *** *** ** * ** * area;
*** ******* * * *** ** = ** ** *
* * ** * ***** ** * ** *** ** * * area;
* ** * ** * ** *** ***

};

class * *** public Shape

{

public:
* ** **** ** *** Your code: ** * * * ** ** * * *
** * * * * *** ** * **
**** *** * ** ******* ** ** * area;
*** *** ** * * ** ** **** = (width * * **
* * **** * * * ****** * area;
** * ** ** ** * *

};

int *

{
* ** **** * ** ** *** * Rect;
* **** * ** * **** * * *
* * * *** * *** * w,h;
* **** ** * * * **** ** ** *** ** ***
*** ** **** ** **** ** * ***
** *** * * * ** ** * *
* *** * * * ** * ***
** * * *** * * * *
* *** *** * * * ** * **
*** ** * * ** ***** ** ** ** * ** * *** **** ******* ******** * ** *** * * * ** endl;
** * * ** ** ** 0;

}
answered by (237 points)
0 like 0 dislike
Hidden content!
#include * *** *** * *

using ** * * std;

// Base class

class Shape

{

public:
* *** ****** * * * Your code: pure virtual function ** ** * *** *
** ** * *** * * ** * and * * * w) and * * ** *** h) ** ** here
* * * * * * * w){width = w;}
** * **** * ***** * * *** * * = h;}
* * * *
**** * ** ** ** ** width;
** * ** * height;

};

// Derived classes

class ** * public Shape

{

public:
** * ** ** * ** * * * * Your code: ** * * **** * *
* * *** ******* ** *** area;
* *** * ****** * *** * *** * ** * = ** *
* *** ** * *** * ** * *** * area;
* * ****** **** *

};

class **** public Shape

{

public:
* *** * *** ** * Your code: * ** ** ***** ** * *** *
*** ** **** *** * * ****
* ** *** *** ** * * ****** area;
* * * ** **** *** = (width * ** *
** * ** * ** ** * ** * * * area;
* * **** * **** *** *

};

int * *

{
***** * ** * ** * Rect;
* * ** *** ** * * **
** **** **** * w,h;
* * ** ** * ** * * * ** * * ** * *
** * ** ** ** *** ****
* **** ** ** * **** * ** * ** *
****** * ** **** * * * *** ** ******* ***
* ******* ****
*** * *** ** * ** ***
** * * ** ** * *** * * *** * ** * ** * * ** ** * * ** ***** * *** ** * * endl;
* *** * *** * * 0;

}
answered by (126 points)
0 like 0 dislike
Hidden content!
#include ** **** * *



using ** * std;



class Shape

{
* ** ***
**** ** * ** * * **** width, height;

public:
*** *** * *** * *** set_data (float a, float b)
** ** ** ** * * * *
* ** * ***** * * ** ***** * * ** * **** * * ** * * = a;
** ** *** * * * * * * * ** * **** * * ** * = b;
* * *** *** * *** ** * **

};



class **** public Shape

{

public:
* ** **** ** * ** * area ()
*** *** * * * ** * * *
**** * ** * * **** ** *** *** * **** * ** * * (width * height);
*** **** * *** *** *

};



class ** ** public Shape

{
** *
* **** ** ******** area ()
** * *** ** * ** *****
* **** ** ** * **** * ** (width * height / 2);
***** *** ** ** *** ***

};



int main (){
** * * ***** ***** ** *
* ** * * *** * *** rect;
** * *** ** * ** * tri;
** ** ** *** ** * **** * ** (5,3);
**** * *** * * * ** *** **** (2,5);
*** ** **** * * * * * *** * ** * * * * * * * ** ******** * ** * * ** ** *** * * endl;
** * * *** ** * ** ** 0;

}
answered by (-298 points)
0 like 0 dislike
Hidden content!
#include **** *** ** *

using namespace std;

class Shape

{

public:
*** *** ** *** *** ** int setWidth(int n1){
* * ** * * *** ** * **
******** **** ***** *
** ** *** * ** * ***** int setHeight(int n2){
** ** **** ****** * * ***
*** * ** * * *
****** ** *** * * getWidth(){
*** * * ** * width;
* ** ** * * * *** *
** ** * *** * * getHeight(){
* * * * ** ** * ** * ** ** height;
** *** * * *

protected:
****** * * * * ** width;
** * * * * ** ** ** height;

};



class Rectangle: public Shape

{

public:
* ***** * * * ** * getArea(){
* * *** ** * * * ***** ** * * ** *********
* ** ** **** * ** *

};

class Triangle: public Shape

{

public:
** * **** ** getArea(){
** ***** ** * ** * * ** ** * * * ** * ***
** ** * *** **** *** **

};

int main(void)

{
** * *** * * ** * Rect;
*** * * * ** * *** **
* * ** **** ** *** w,h;
* * ***** * * ** * *** * * ** **
* ** ** *** * **********
* ***** * ** ** * **
******* *** ** ** * * *** **** * ** *** **
* *** * ** * *
* *** * * * ** **
* ****** ** ** * * * * * * * **** * **** * * * * * *** * * ** * **** ** **** * endl;

* * * * * * * 0;

}
answered by (-249 points)
0 like 0 dislike
Hidden content!
#include * *** * * *****

using namespace std;

// Base class

class Shape

{

public:
* **** * Your code: pure virtual function * **** * ** * **
* **** * *** * * and ** * w) and ** ** h) **** here
* ****** ** ** ** * ** x);
*** * * * ******* * ** ** * y);
* * ***
* * * * ***** * width;
******* ** *** height;

};

// Derived classes

class *** public Shape

{

public:
* ** * * * * * Your code: ** ***** ** ** * * * *
* * * * ***** * * * *
*** ** ** ** ** * *** ********* **** ** ** ** * ****
** * **

};

class Triangle: public Shape

{

public:
* ** *** ** ** Your code: *** *** *** * * *
** ** * ** *** ** ** *
* * **** ** ** * * *** ** ***** * * *** *
* *** **

};
* *

int ** * * ** ** x){
* * ** ** * * **** = x;

}

int * * y){
** * *** * * **** = y;

}



int *** *

{
** ** *** *** * ** Rect;
******* * * **** * ** * * * * * *
** ** * *** w,h;
** * ** * ** * * *** *** *
*** * *** ** **** * *
*** ** * * * * * **** ** ** * *
** **** * ******** ** * * *** * *****
**** * * * ** * ****** ***
*** * * ** * *** ** ** *
* ** * * ** * * ** * ** * * ** ** * ** * ** ** * * ***** *** ** ** * * *** * * endl;

*** * *** ** ** ** ** 0;

}
answered by (-136 points)
0 like 0 dislike
Hidden content!
using * ** * std;

// Base class

class Shape

{

public:
** ** * * ** Your code: pure virtual function ** * * * * **
** ****** * *** *** * * and ******* w) and * * h) functions here
** *** * *** ** ** *** x);
* ** ** ** * * * ****** y);
*
* * * **** *** ***** * width;
** **** ** ** ** height;

};

// Derived classes

class **** ** public Shape

{

public:
* * *** ** * Your code: * * * **** * ** getArea()
* *** **** ***** * * ****
**** * ** * * * * ** * * ** * ** * * ** **
* * ** *** **

};

class * public Shape

{

public:
* ** **** ***** **** *** Your code: ** * * * *** * **** ** *
** ** *** * *** * **
**** * *** ** *** ** ** * ** * * * * ** * * ** * * ***
* *** ** * * **

};
* **

int * ** * * x){
** * * * * * * * * = x;

}

int * **** * ** y){
* ** ***** *** * * * * * ** = y;

}



int *** *

{
* * *** ** ***** * * * * Rect;
* * * ** **** * ** *
* * ** ** ** * w,h;
* *** *** ** *** **** * * * * * *** **** * *
** ** * ***** * * ** * ***
* *** * *** ***** * * * * ** *
* * ** * **** *** *** ****
** *** * ********* **
* ***** * ** * ** * *
** * * ** *** ** ** ***** * ** * * ** * * **** ** * *** *** * * *** endl;

*** * *** ** * ** * 0;

}
answered by (-136 points)
0 like 0 dislike
Hidden content!
#include *** * * ** * *

using **** std;

// Base class

class Shape

{

public:
*** ** * ** * * Your code: pure virtual function **** * **
** * * * *** * *** ***** * * ** and *** ** w) and ** * h) **** here
*** ******* ** ********** * w){width = w;}
***** ** ** ** * * ** * ** * * = h;}
* **
*** * * ****** * width;
***** **** * ******* height;

};

// Derived classes

class * ** * public Shape

{

public:
* * * ******** Your code: ******* ** *** ***
* *** * ***** * * * area;
*** * **** *** ** ** ** = * ** **
* * ** * * ** * * ** area;
* ** * **

};

class * * * public Shape

{

public:
**** ** * ** ***** Your code: * * * * * *** * *
** ** * * * *
* * ** * ****** * * area;
* **** ***** * ** * * = (width * * *** *
*** **** ** * * ** * area;
* * ** ***** * ** *

};

int ** *

{
**** * * * ** * * Rect;
* * ** **** ******* *** ******
** * * ** *** * w,h;
** * ** * ** *** * * * * * ** *** ***
* * * ** ** ** * *** * *
********* * *** * * * * *
*** * * * *** ***** ** * * **
* *** * * * * *
* * * * * * * * ** * *
********* * ** * * * ** * *** ** * * ***** ***** * ** ** **** *** ** * * * * * * *** ** endl;
* ** * * ** 0;

}
answered by (-189 points)
0 like 0 dislike
Hidden content!
#include ***** *** ***

using namespace std;

// Base class

class Shape

{

public:
* *** * * Your code: pure virtual function providing interface framework.




***** * * * ****** **
* * * *** ** * * ** *** ** *** * * ** * **
**** **** * **** **** ** * * ******** ***** *
* * *** * ** **
*** ** * *** * ** in){
** ** ** * ** * ** * * * * * **
** **** ** * *
****** * *** * ** * in){
* ** ** ** ** ** ****** *** *** ** * * ****** *
*** ** ******
** ** ** * * ** constructor and ** * * w) and * * *** h) functions here
* *
* * **** ** *** * width;
** *** * ** * height;

};

// Derived classes

class Rectangle: public Shape

{

public:
* * ** ** * ** *** * Your code: ** * * * * ** getArea()
* * ** * * ** ***** ****
* * * * ** *** ** ** * * * * ** *** ** * **** * ***
* ** * * * **



};

class Triangle: public Shape

{

public:
***** * * * ** * **** Your code: * *** * *** getArea()
* * * * ** **** * * * ***
* ***** ** * ** ** ** * ** ** *** ***** ** ** * * * *
** * * ****** ******



};

int main(void)

{
* * * *** * * * * Rect;
* *** * **** ** **** * ***
* * **** * ** ** w,h;
** ****** * **** * ** ** * ** ***** *
* ** * ** * * * ** *
***** * **** ****** * *
* *** **** **** *** * * * * * **
*** * ** * *** * * * * *
** ****** * ** * ** * * **
**** ** ** * * * ** *** ******* ** * * *** * *** * *** ** ** * ** ** * * ** * * * * ** ** endl;
* *** ** * * ** 0;

}
answered by (-368 points)
Welcome to Peer-Interaction Programming Learning System (PIPLS) LTLab, National DongHwa University
English 中文 Tiếng Việt
IP:172.71.254.84
©2016-2025

Related questions

0 like 0 dislike
15 answers
[Exercise] Coding (C) - asked Jun 1, 2017 in C++
ID: 24854 - Available when: Unlimited - Due to: Unlimited
| 2.5k views
0 like 0 dislike
27 answers
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24389 - Available when: Unlimited - Due to: Unlimited
| 3.7k views
0 like 0 dislike
1 answer
[Exercise] Coding (C) - asked Apr 27, 2017 in C++
ID: 24390 - Available when: Unlimited - Due to: Unlimited
| 892 views
12,783 questions
183,442 answers
172,219 comments
4,824 users